package hashsset;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Scanner;

public class Random {
    public static void main(String[] args) {
        HashSet <String> random =new HashSet<String>();

        while (random.size()<10)
        { Scanner sc=new Scanner(System.in);
            int num=sc.nextInt();


        }
        Iterator iterator=random.iterator();
        while (iterator.hasNext())
        {
            System.out.println(iterator.next());
        }
    }
}
